.black_overlay{
display: none;
position: absolute;
float:left;
top: 0%;
left: 0%;
width: 100%;
height: 2800px;
background-color: black;
z-index:1001;
-moz-opacity: 0.6;
opacity:0.6;
filter: alpha(opacity=60);
}


.white_content {
display: none;
position: absolute;
top: 20%;
left: 30%;
z-index:1002;
overflow: auto;
width:50%; border:2px #000 solid; -moz-border-radius:5px; border-radius:5px; -webkit-border-radius:5px; background:#FFF;}